47 According to the passage, where in the world is the problem of clean water supply most serious?
(A) The developed world
(B) The underdeveloped world
(C) The natural world
(D) The developing world

答案:登入後查看
統計: A(30), B(38), C(17), D(182), E(0) #1329155

詳解 (共 1 筆)

#2140672
Clean drinking water...
(共 1182 字,隱藏中)
前往觀看
13
0